Two draft preliminary views were approved, with corrections, at a...
Two draft preliminary views were approved, with corrections, at a Thurs. meeting of the 2nd Informal Working Group (IWG-2) for the next World Radiocommunication Conference (WRC-07). It was the group’s last meeting before the WRC Advisory Committee (WAC) meets…
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June 8. While agenda item 1.21 -- proposing to look at studies on the compatibility of radio astronomy services and active space services -- caused little discussion at a previous meeting (CD May 13 p14), there were questions about the scope of several of the views presented. Discussions centered on the 3rd view, which suggested that the results of certain studies should be used to determine whether it would be appropriate to specify band pairs for compatibility. Ultimately, the group eliminated that view and modified the remaining views to say: (1) Resolution 740 (from WRC-03) would determine the band pairs and threshold levels that would be reviewed based on the results of compatibility studies. (2) If Table 1-1 or 1-2 from Resolution 739 (WRC-03) is updated, it should also be based on the ongoing studies. (3) “Any studies to develop thresholds associated with band pairs from Resolution 740 should fully consider the impact to the concerned active services in order to ensure that those active services are not unduly constrained.” No changes were made to a 2nd item (agenda item 1.6). Changes proposed in a previous meeting were adopted. The item requests consideration for allocation additional bandwidth for aeronautical mobile satellite services (AMSS) between 108 MHz and 6 GHz and a study of current allocations. IWG-2 also had lengthy discussions on several views prepared by the Radio Conference Subcommittee (RCS). Multiple proposals were made to the group for changes to RCS agenda item 1.19, which asks to “consider the results of the ITU-R studies regarding spectrum requirement for global broadband satellite systems” to look at harmonizing globally fixed satellite service (FSS) frequency bands for broadband. After considerable discussion, IWG-2 determined it would be more valuable to present a preliminary view rather than corrections to the RCS view. Final views will be determined on circulation among the group but IWG-2 came to the following tentative conclusions: (1) Identifying specific frequencies for broadband applications isn’t necessary. (2) The idea of making the bands more useful is a “supported” view, but the group doesn’t support replanning the band.